As an alcohlic/addict in recovery (5years) I can say that while using it affected all aspects of my life. Every move I made, every goal I had was about when was the next drink coming and the next bag bought. It hurt my relationships, my loved ones, and myself in the process. Quitting the drugs actually really didn't bother me for a long time, but I've found that every once and a while an urge will still come to me out of the blue. Kind of scary.
The alcoholism is a different subject. I've come very close to relapse more times than I'd like to count. It's something that haunts me almost every day and is a constant struggle to abstain from. Partly because it is legal, and it seems that EVERYONE drinks. But at the same time I know the damage that it caused while I was drinking every day, and that's all that keeps me away from the bottle.
I don't see writing, or logging on to hubpages as an addiction. Writing is my passion and an outlet to vent my own inner struggles and ideas.